* show drop effect on folders only
- fix `hasValue` api for data rows (avoid 'false' value to be evaluated as missing value)
- support for evaluating drop support for rows
- document list enables upload zones for folders only
* api improvements as per code review
* extra DOM events for DataTable
- support for ‘row-click’ DOM event (bubbling)
- support for ‘row-dblclick’ DOM event (bubbling)
- DataRowEvent exposes ‘sender’ property to simplify access to
component from within handlers
- readme and test updates
* fix unit tests
* showing selected row
Support for showing selected row for the components:
- DataTable
- DocumentList
- Activiti TaskList
- Activiti ProcessList
fixes#170
* unit test fixes